There should not be the sensitivity difference you are experiencing. My guess is that the 4A could use an alignment. If you haven't actually tested the tubes or done a few swaps, you might try that too.
BTW, congrats on the 4B. That is the only Drake I have and I am similarly very pleased with it. Dennis AE6C On Fri, Apr 17, 2009 at 6:13 PM, Chuck Grandgent <ch...@chuckg.com> wrote: > Well the purpose of this post is twofold: > > First, despite periodic negative reports about the eB** place, I wanted to > report my just received acquisition of a very nice R4B. Decent price, > decent shipping charge, very well packed, nicely bound copy of the R4B > manual plus misc other relevant R4x articles, received approx three days > from the end of the bidding (USPS Priority). I don't recognize the call from > being on this list, so I won't identify unless there's a reason to. In > short, I couldn't be more pleased. > > The second reason for the post is about my R4A, and the diff between it and > he R4B. > I have to say, I have been happy with the R4A over the appro 10 years I > have owned it. I have had to do a fair amount of work on it in the AGC > section, but I have done lots of great QSO's with it. And to be fair, it > lives in my garage, here in No. Florida, and what with the heat, humidity, > and insects, it has not had an easy life. > > Anyway, my first impressioin on powering up the R4B is, that it is SO MUCH > MORE SENSITIVE than my R4A, including the S-meter response. Nevermind that > the switches seem a lot cleaner, the tuning knob spins easier, etc.. > > So anyway, I wanted to ask, where would you first begin to look in the R4A > to account for the difference in sensitivity between it and the R4B I just > got ? I have checked all tube pin voltages, and they do agree closely with > what they should be, and I believe the tubes are OK. > > Chuck, K1OM, Alachua, FL > > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > >
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